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Water-Year Summary for Site 15261000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 60°28'50", long 149°52'50" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.31, T.5 N., R.3 W., Kenai Peninsula Borough, AK, Hydrologic Unit 19020302, (Seward B-8 quad), on left bank, approximately 0.5 mi upstream from mouth, and 1.5 mi west of Cooper Landing.
DRAINAGE AREA - 16.8 mi².
PERIOD OF RECORD - October 1957 to January 1965, August 1998 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 450 ft above sea level, from topographic map. From October 1957 to January 1965, 0.4 mi upstream at different datum.
REMARKS - Since July 1959, entire flow from 31.8 mi² of drainage area has been regulated by dam at Cooper Lake outlet. Beginning July 20, 2015 flow is regulated by release from a siphon drain valve from Cooper Lake. An additional 8.0 mi² of the Stetson Creek drainage was diverted into Cooper Lake on July 20, 2015. No spilling since 1959 except for period May 1961 to October 1962. GOES satellite telemetry at station.
PERIOD OF RECORD - Water years 1998 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: August 1998 to current year.
INSTRUMENTATION - Electronic water-temperature recorder set for 15-minute recording interval.
REMARKS - Records represent water temperature at the sensor within 0.2°C. Heavy shore ice occurs near the gage.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 16.2°C, August 13, 2019; minimum, 0.0°C on many days during winter periods.